Circulating liquid bath with reservoir dual level switch

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(11)

EP 2 594 335 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	05.06.2013 Bulletin 2013/23

(43)	Date of publication A2:
	22.05.2013 Bulletin 2013/21

(21)	Application number: 12190028.6

(22)	Date of filing: 25.10.2012

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International Patent Classification (IPC):

B01L 7/02^(2006.01)
F24H 1/10^(2006.01)

A47J 27/21^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

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Priority:

28.10.2011 US 201161552742 P

(71)	Applicant: Thermo Neslab Inc.
	Newington, NH 03801 (US)

(72)	Inventors:
	Enos, Don A Dover, NH New Hampshire 03820 (US) Parker, John Loring Eliot, Maine 03903 (US) Wiley, Robert L Stratham, NH New Hampshire 03885 (US)

(74)	Representative: Instone, Alicia Claire
	Scott & York Intellectual Property Limited 45 Grosvenor Road St Albans, Hertfordshire AL1 3AW St Albans, Hertfordshire AL1 3AW (GB)

(54)	Circulating liquid bath with reservoir dual level switch

(57) A circulating bath (10) including a heater (18) configured to heat a fluid (34) in a reservoir (22). The heater (18) is configured to be operatively connected to a source of power (50) by a control circuit (39) operatively coupled to the heater (18). First and second fluid level sensors (14) (16) are operatively coupled to the control circuit (39), and provide signals indicative of a low fluid condition in the reservoir (22). The control circuit (39) is configured to receive the signals from the fluid level sensors (14) (16), and disconnect the heater (18) from the source of power (50) in response to receiving a signal from either of the first and second fluid level sensors (14), (16) indicative of a low fluid condition.

Search report

Search report